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Properties of substance:

cyclopropene

Group of substances:

organic

Physical appearance:

gas

Empirical formula (Hill's system for organic substances):

C3H4

Molar/atomic mass: 40.06

Boiling point (°C):

-36

Numerical data:

Year of discovery: 1932
Interatomic distances (in pm): 129.3
Interatomic distances (in pm): 107.2
Interatomic distances (in pm): 150.5
Interatomic distances (in pm): 108.5
Bond angles (in degrees): 150
Bond angles (in degrees): 114.3

Dissociation:

pKa (1) = 65 (25°C, water)

Dipole moment (D):

0.454 (20°C)

Standard molar enthalpy (heat) of formation ΔfH0 (298.15 K, kJ/mol):

277.1 (g)

Gas phase basicity ΔbaseG (298 K, kJ/mol)

-787.8 (g) [Ref.]

References:

  1. CRC Handbook of Chemistry and Physics. - 90ed. - CRC Press, 2010. - pp. 5-23, 9-36, 9-54
  2. Rappoport Z. The chemistry of the cyclopropyl group. - Vol. 1. - 1987. - pp. 1224
  3. Краткая химическая энциклопедия. - Т. 5: Т-Я. - М.: Советская энциклопедия, 1967. - pp. 853-854 [Russian]
  4. Реутов О.А., Курц А.Л., Бутин К.П. Органическая химия. - 2-е изд., Ч.1. - М.: Бином. Лаборатория знаний, 2005. - pp. 219 [Russian]
  5. Свойства органических соединений: Справочник. - Под ред. Потехина А.А. - Л.: Химия, 1984. - pp. 428-429 [Russian]
  6. Химическая энциклопедия. - Т. 5. - М.: Советская энциклопедия, 1999. - pp. 370 [Russian]

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    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru